const fruits = [
  { name: 'Apple', quantity: 20 },
  { name: 'Banana', quantity: 35 },
  { name: 'Orange', quantity: 50 },
  { name: 'Grapes', quantity: 15 }
];

const totalQuantity = fruits.reduce((accumulator, fruit) => {
  return accumulator + fruit.quantity;
}, 0);

console.log("Total fruit quantity:", totalQuantity); // 120